I forget which ARM chip it ships with, but it’s capable of pushing almost 200Mbps on WireGuard, and it’s a significant bargain over the Linksys. Its antennas probably won’t cover same distance as the Linksys though—that works in my small apartment or if you use a couple of them in a mesh network. For a bigger house and if you like to keep things simple, the Linksys or the Turris are probably the best options.
My PC with an Intel Wireless-AC 9260 has the following network connection, reported by the OpenWRT interface: "400.0 Mbit/s, 40MHz, VHT-MCS 9, VHT-NSS 2, Short GI 400.0 Mbit/s, 40MHz, VHT-MCS 9, VHT-NSS 2, Short GI"
My work 2018 Macbook Pro gets the following: "540.0 Mbit/s, 40MHz, VHT-MCS 9, VHT-NSS 3 600.0 Mbit/s, 40MHz, VHT-MCS 9, VHT-NSS 3, Short GI"
Mine and my wife's LG V40 Android phones get this reported speed: "400.0 Mbit/s, 40MHz, VHT-MCS 9, VHT-NSS 2, Short GI 6.0 Mbit/s, 40MHz"
Not sure if there's any extra information I can provide. I'm not affiliated with Linksys.
If you care about performance rather than open source purity tests, Asus RT-AX88U is the way to go.
Most OpenWRT ports don't offload the LAN/WAN routing, and doing it on a lowly ARM CPU often effectively limits this to a few hundred megabits - e.g. 150mbps on my WDR4300 (which does manage 800Mbps for the same task with the original closed firmware which does do some hardware offloading)
Know some people who use them for a bridged setup over ac standard. No issues there as well.